ASTROSAT CZTI

Data Quality Report

Orbit 15921

Creation date: 2024-06-27T17:15:09.916950
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A04_143T01_9000002344_15921cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15921cztM0_level2_quad_clean.evt
Size (bytes)536,330,88093,899,520
Size511.5 MB 89.5 MB
Events in quadrant A5,866,529586,411
Events in quadrant B3,375,885640,938
Events in quadrant C3,401,546602,445
Events in quadrant D3,186,155588,598

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214353
B0139402
C0140222
D0133882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A609390514.853110%
B60931021.674052%
C6093921.509929%
D6093550.902675%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7454 6095 598 598 8.02% 9.81%
B 7454 6094 11 11 0.15% 0.18%
C 7454 6094 0 0 0.00% 0.00%
D 7454 6095 20 20 0.27% 0.33%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 239 2779516 17638.57 791 779 157.5
A 13 248 44045 274.64 791 779 157.5
A 0 226 7143 40.4 791 779 157.5
B 0 182 32299 201.1 834 816 156.6
B 0 189 27330 169.36 834 816 156.6
B 12 111 17175 104.49 834 816 156.6
C 3 233 151728 818.78 798 806 184.3
C 14 238 123099 663.46 798 806 184.3
C 7 247 14528 74.44 798 806 184.3
D 10 70 55460 282.36 803 784 193.6
D 5 51 45344 230.12 803 784 193.6
D 2 234 30486 153.39 803 784 193.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter